| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel tank capable of preventing looseness of a cap while suppressing an increase in the number of components.SOLUTION: A fuel tank 1 comprises: a projection part 7 which is provided at a position different from a male screw part 4 of an outer peripheral part of a neck part 3 of a tank body 2, and projects outward in a radial direction of the neck part 3; and a plate spring 20 having a projection 22 which is fixed at a position different from a female screw part 14 of an inner peripheral part of a cap 10, and projects inward in a radial direction of the cap 10. The projection 22 rides over the projection part 7 when the cap 10 is rotated in a fastening direction D and screwed to the neck part 3. The projection part 7 restricts rotation in an opposite direction from the fastening direction D of the cap 10 by coming into contact with the projection 22.SELECTED DRAWING: Figure 1 |
